$ git clone -n https://src.fedoraproject.org/rpms/R-lazyeval.git /var/lib/mock/f38-build-724738-99479/root/chroot_tmpdir/scmroot/R-lazyeval
Cloning into '/var/lib/mock/f38-build-724738-99479/root/chroot_tmpdir/scmroot/R-lazyeval'...
$ git fetch origin b6afe7de93b811928f6db43ed9a61a782acf2b93:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-lazyeval
 * [new ref]         b6afe7de93b811928f6db43ed9a61a782acf2b93 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b6afe7d R-maint-sig mass rebuild